Entelognathus

Though the following article does detail an official piece of Land Before Time media approved of by Universal, it should in no way be seen as a canon part of the Land Before Time universe established by the movies and TV series episodes.

"Send it awayDon't let it staythat Entelognathus"

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Reason specified: Just a Dunkleosteus

This article is for a speculative species; a creature that has not been assigned to a taxon by any official media or material. It may not be intended to represent an actual species. However, if a reasonable representation of a real species is found, it will be identified as closely as possible.

Unreasonable or overly speculative articles may be deleted for the sake of parsimony.

Entelognathus ("Complete jaw") is a genus of placoderm from the Silurian period of China. It was discovered with a complete, functioning jaw, showing that modern jaws evolved much earlier than previously thought. This discovery has also changed the tree of life, as it is now believed that placoderms are closely related to bony fish and that the modern jaw first evolved in placoderms, not bony fish as previously thought.